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Zhejiang CSB Plastic Bearing
Technology Co.,Ltd

Address: No.6, Fenhu Road, Huimin Sub-district, Jiashan, 
Zhejiang, China

Tel: +86-573-84185528

E-mail: oversea@csb-ep.com

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Plastic Bearings

EPB3G Plastic Plain Bearings

EPB3G Plastic Plain Bearings

CSB Plastic is one of the leading China epb3g plastic plain bearings manufacturers and suppliers, and also a professional plastic bushing bearings factory and company, we are always at your services. EPB3G Plastic Plain Bearings ? Optimized for middle load applications. It is suitable for low...

CSB Plastic is one of the leading China epb3g plastic plain bearings manufacturers and suppliers, and also a professional plastic bushing bearings factory and company, we are always at your services.

EPB3G Plastic Plain Bearings

? Optimized for middle load applications. It is suitable for low frequency motion and low cost requirement.

Continuous working temperature: -40?~110?;

High load capacity;

Good economic ratio;

? Dry operation and maintenance free;

? Applicable for various shaft materials.

The Material Data Sheet


Typical Item

Standard

Unit

CSB-EPB3G

   Density

ISO1183

g/cm³

1.37

   Color

Black

   Dynamic friction /steel(dry)

0.05-0.15

  Max. PV (dry)

N/mm²×m/s

0.3

   Max. roatating velocity

m/s

0.8

   Max. oscillating velocity

m/s

0.6

   Max. linear velocity

m/s

3.5

   Tensile strength

ISO527

MPa

190

   Compressive strength (Axial)

MPa

75

   E-module

ISO527

MPa

7500

   Max. static pressure of the surface, 20?

MPa

75

  Shore hardness

ISO868

D

78

   Continuous work temperature

?

-40/110

   Short-time work temperature

?

-40/200

   Thermal conductivity

ASTME1461

W/m×k

0.25

   Linear coef. of thermal expansion

ASTMD696

K-1×10-5

11

   Moisture absorption RH50/23?

ASTMD570

%

1.3

   Max. water absorption, 23? % 5.5

   Flammability

UL94

HB

   Volume resistivity

IEC60093

Ocm

>1013

   Surface resistivity

IEC60093

O

>1011


PV Value of Bearings

The max PV value of the CSB-EPB3G series bearing is 0.3N/mm2*m/s which determines the load capacity of bearing is inversely proportional to the speed. Please refer to the chart for more detailed information (Graph EPB3G-1).

CSB-EPB3G allows the Max static load of 75Mpa, The max compressive deformation rate under the max load is listed in Graph EPB3G-2, The actual load capacity of bearing is slightly less than 75Mpa, The bearing load is variable against the speed and temperature, Fast speed (Vmax: 0.8m/s) results into higher temperature (Tmax: 110?) which decreases the load capacity of the bearing. Please refer to the Graph EPB3G-3 for such variation.

The Friction Factor,Wearing and shaft material

Friction Factor

Graph EPB3G-4 and Graph EPB3G-5 show that the friction factor of CSB-EPB3G is variable along with the changing of the operation speed and bearing loading especially when the bearing loading is within 20Mpa. In the mean while the Graph EPB3G-6 shows that the friction factor of CSB-EPB3G is also affected by the shaft surface roughness. Too rough shaft surface or too fine shaft surface will increase the wearing and friction factor. The recommended shaft surface roughness is Ra0.1~0.3.


CSB-EPB3G
Dry
Grease
Oil
Water
Friction coef. µ
0.05~0.15
0.09
0.04
0.04


Wearing and shaft material

Graph EPB3G-7 and Graph EPB3G-8 show that the wearing of CSB-EPB3G is similar either against the normal shaft or hardened shaft. The most suitable shaft materials for CSB-EPB3G are hardened steel and hardened chrome steel. Graph EPB3G-8 shows that the wearing feature is better in oscillation operation than in rotation operation.

Chemical Resistance

CSB-EPB3G is good at chemical resistance against weak acidic medium and various kinds of lubricants.

Water Absorbability

The water absorb rate of CSB-EPB3G is 1.3% under the atmospheric pressure while it is 5.5% when the material is immerged into water. The application environment has to be considered because of its water absorb properties

UV Resistance

CSB-EPB3G can maintain its color unchanged when it is exposed into the UV ray. The material performance stays stable.

Bearing Installation

CSB-EPB3G The Interfit Tolerance

Diameter mm

Tolerance after fit E10

Fit Housing H7

Fit Shaft h9

>0~3

+0.014~+0.054

0~+0.010

0~-0.025

>3~6

+0.020~+0.068

0~+0.012

0~-0.030

>6~10

+0.025~+0.083

0~+0.015

0~-0.036

>10~18

+0.032~+0.102

0~+0.018

0~-0.043

>18~30

+0.040~+0.124

0~+0.021

0~-0.052

>30~50

+0.050~+0.150

0~+0.025

0~-0.062

>50~80

+0.060~+0.180

0~+0.030

0~-0.074

>80~120

+0.072~+0.212

0~+0.035

0~-0.087

>120~180

+0.085~+0.245

0~+0.040

0~-0.100

CSB Plastic is one of the leading China epb3g plastic plain bearings manufacturers and suppliers, and also a professional epb3g plastic plain bearings factory and company, we are always at your services.

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Zhejiang CSB Plastic Bearing Technology Co.,Ltd